Stuart Rutherford, co-author of Portfolios of the Poor, discusses three MFIs that have redesigned their products to more adequately meet the three fundamental challenges poor households face. These challenges are outlined in Part 3 of this video series: Identifying and Meeting the Financial Needs of the Poor. Grameen-2, SafeSave, which Rutherford founded, and BURO Bangladesh are cited as examples of MFIs that have revolutionized their models to fit the needs of poor households. Rutherford also comments on the potential of e-banking and m-banking for microfinance industry.